/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package edu.capex.javaee.session;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Acer
 */
public class loginServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {

            String username = request.getParameter("username");
            String password = request.getParameter("password");
            HttpSession session = request.getSession(true);



            if (session.isNew()) {
                out.println("<h1>Session is Active</h1>");
                out.println("<p><a href=\"index.html\">HomePage</a> and return to login page")  ;
            } else {
                session.setAttribute("username", username);
                session.setAttribute("password", password);
                out.println("<html>");
                out.println("<head>");
                out.println("<title>Showing Cookies and Headers</title>");
                out.println("</head>");
                out.println("<body>");

                out.println("<h1>Login Application using Session Tracking</h1>");
                out.println("<p>Thank you, "+username+". You are now Logged In</p>");

                String newURL = response.encodeURL("WelcomeServlet");
                out.println("Click <a href=\""+newURL+"\">here</a> for another servlet");

                out.println("</body>");
                out.println("</html>");

            }


        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
